Abstract: A structure of pattern pressing roller comprises a shaft and a plurality of pattern pressing loops suitable for slipping onto the shaft, wherein each loop consists carved pattern on its surface. The pattern pressing loops are slipped onto the shaft, and they are aligned and located tightly against each other and onto the shaft so that when the shaft is in the rotation motion, the pattern pressing loops are moved together with the shaft in one motion. When one or more of the pattern pressing loops is required to be repaired due to damages or weariness on its surface, the pattern pressing loops can be removed away from the shaft or a new one is replaced the damaged one quickly and easily.

Abstract: An apparatus for reducing projection distortion is provided. The apparatus comprises a projection lens fitting a specific distortion curve. The projection lens, comprises at least one lens, the distortion curve specifies relationships between distortion rates and projection optical fields of the projection lens, and a first distortion rate difference within a projection optical field range on the distortion curve is less than a second distortion rate difference within the projection optical field range on a linear distortion curve.

Abstract: The present invention relates to an antistatic structure for an optical disc device. An optical pick-up unit module of an optical disk device is installed on a chassis and the chassis is movably installed in a lower cover of the device. Furthermore, the antistatic structure includes at least one upper connecting portion capable of contacting with the optical pick-up unit module and at least one lower connecting portion capable of contacting with the lower cover. Whereby, the static electricity generated by the optical pick-up unit module can be conducted to the lower cover through the upper and lower connecting portions so as to attain the antistatic discharge (ESD) protection effectively.

Abstract: A structure for fixing an optical pickup head mounting shaft includes a fixation seat on which a positioning groove and a restricting groove are disposed and a locking element locked in the restricting groove, in which one side of the positioning groove is formed with an opening to allow the shaft to be passed through the opening to positioned in the positioning groove. Whereby, the locking element is locked into the bottom of the restricting groove through the guidance of the wall of the restricting groove with a proper angle so that the locking element presses on the shaft properly and further provides the positioning function.

Abstract: A wireless display device includes an antenna unit, a processing unit, a display unit, and a power supply unit. The antenna unit is provided for receiving a first electromagnetic wave and a third electromagnetic wave, and transmitting a second electromagnetic wave. The processing unit is connected to the antenna unit for obtaining an identification data, a display data and a first electric power from the first electromagnetic wave, and the first electric power provides power for the processing unit. Additionally, the display unit is connected to the processing unit for displaying an image in accordance with the display data via the processing unit. The power supply unit is connected to the antenna unit and the display unit for obtaining a second electric power from the third electromagnetic wave so as to provide the display unit with the second electric power.

Abstract: An interactive presentation system uses a presentation computer, a computer-controlled image projector and a projection screen, in which control of the presentation computer is accomplished by using a wireless optical pointer that projects an encoded control cursor onto the projection screen. The projected screen images are monitored by a video camera, and the control cursor is scanned, detected and decoded for emulating various keyboard commands and/or pointing device (mouse, touch pad, track ball) position-dependent cursor operations. The control cursor is reliably detected and its coordinate location is accurately determined on the basis of one or more primary image attributes, for example image intensity and image repetition rate, both of which are independent of monitoring angles and pointing device projection angles, and one or more secondary image attributes, for example image size, color and pattern.

Abstract: A semiconductor wafer is disclosed that includes a plurality of fields, including a plurality of alignment fields. Each alignment field includes a plurality of intra-field small scribe lane primary mark (SSPM) overlay mark pairs there around. The SSPM mark pairs allow for in-situ, non-passive intra-field alignment correction. In one embodiment, there may be between two and four alignment fields, and between two and four SSPM mark pairs around each alignment field. The SSPM marks of each mark pair may be extra scribe-lane marks.

Abstract: The present invention relates to a method of manufacturing a hollow silicon rubber doll or doll semis. The method comprises the following steps: preparing the silicon rubber liquid; injecting the prepared silicon rubber liquid into the mold; removing any unwanted silicon rubber liquid while making an amount of silicon rubber liquid adhere to the interior wall of the mold; injecting some liquid with approximately the same density of the silicon rubber liquid into the mold with the silicon rubber liquid adhering to the interior wall.